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https://issues.apache.org/jira/browse/PIG-1703?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Daniel Dai resolved PIG-1703.
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Resolution: Fixed
Verify fixed in trunk.
> Pig get confused if map value is not bytearray
> ----------------------------------------------
>
> Key: PIG-1703
> URL: https://issues.apache.org/jira/browse/PIG-1703
> Project: Pig
> Issue Type: Sub-task
> Affects Versions: 0.8.0
> Reporter: Daniel Dai
> Assignee: Daniel Dai
> Fix For: 0.9.0
>
>
> It is the same nature of
> [PIG-999|https://issues.apache.org/jira/browse/PIG-999]. Just adding another
> test case:
> {code}
> a = load ':INPATH:/singlefile/studenttab10k' as (name: chararray, age: int,
> gpa: float);
> sds = load ':INPATH:/somefile' using SomeLoader() as (s:map[], m:map[],
> l:map[]);
> views = FOREACH sds GENERATE s#'srcpvid' as srcpvid, flatten(l#'viewinfo') as
> viewinfo;
> views1 = FILTER views BY srcpvid == '1234';
> views2 = FILTER views1 BY (viewinfo#'it' EQ '25');
> map_scalar = limit views2 1;
> z = foreach a generate name, age+(double)map_scalar.viewinfo#'it' as some_sum;
> store z into ':OUTPATH:.2';
> {code}
> Here l is a map of bags of maps. flatten(l#'viewinfo') suppose to get maps.
> However, internally Pig track all map key as bytearray. In the scalar case,
> ReadScalar will give bytearray as outputschema, but it is actually a map.
> What Pig does is to Stringize map, and then convert string back into map,
> which end up with nulls.
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